Ice box



FIG. 1 is a front perspective view of an ice box, showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view;

FIG. 5 is a bottom plan view; and,

FIG. 6 is a left elevation side view, the right side view being a mirror image thereof.

The broken lines showing nails are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for an ice box, as shown and described. 